package com.pikav.proto;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.lang.reflect.Method;
import java.util.Arrays;

/***
 * 表示服务
 *
 * @author pikav
 */
@Data
@AllArgsConstructor
@NoArgsConstructor
public class ServiceDescriptor {

    private String clazz;

    private String method;

    private String returnType;

    private String[] parameterTypes;

    public static ServiceDescriptor from(Class clazz, Method method) {
        ServiceDescriptor serviceDescriptor = new ServiceDescriptor();
        serviceDescriptor.setClazz(clazz.getName());
        serviceDescriptor.setMethod(method.getName());
        serviceDescriptor.setReturnType(method.getReturnType().getName());

        Class[] parameterClasses = method.getParameterTypes();
        String[] parameterTypes = new String[parameterClasses.length];
        for (int i = 0; i<parameterClasses.length;i++){
            parameterTypes[i] = parameterClasses[i].getName();
        }
        serviceDescriptor.setParameterTypes(parameterTypes);

        return serviceDescriptor;
    }

    @Override
    public int hashCode() {
        return toString().hashCode();
    }

    @Override
    public boolean equals(Object obj) {
        if(this == obj) return true;
        if (obj == null || getClass() != obj.getClass()) return false;

        ServiceDescriptor that = (ServiceDescriptor) obj;
        return this.toString().equals(that.toString());
    }

    @Override
    public String toString() {
        return "clazz=" + clazz
                + "method=" + method
                + "returnType=" + returnType
                + "parameterTypes=" + Arrays.toString(parameterTypes);
    }

}
